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aldehydes and ketones: reactivity |
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Definition
more R groups/steric hindrance --> less reactivity |
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ketone and aldehyde IR and NMR absorptions |
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Definition
same as carboxylic acids except sp2 H of CHO in IR; 2700-2830/cm |
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nucleophilic addition vs. acid-catalyzed nucleophilic addition |
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Definition
in acid-catalyzed, protonation first.
otherwise, nucleophilic attack first. |
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The ___ stable, the ____ water will add |
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less; more (or vice versa) |
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Ketone: general reaction at the alpha carbon |
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1. Nuc. attack
2. Dehydrate (+iminium ion) |
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1. protonation of carbonyl oxygen
2. inermolecular nuc. attack
3. deprotonation |
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Synthesize Wittig reagents |
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Name reagents:
1. hydrolysis of nitriles
2. " of imines/enamines
3. " of acetals |
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